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Alternating Current and Direct Current

In a DC gener...

Question

In a DC generator, the induced e.m.f. in the armature is :

A

DC

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B

AC

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C

Fluctuating DC

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D

Can't be said

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Solution

The correct option is B
AC

The emf induced in the armature is AC as its direction changes. By using the split-ring type commutator, the current flow is made unidirectional, and a DC supply is obtained.

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